25685081 has 8 divisors (see below), whose sum is σ = 26627328. Its totient is φ = 24750000.

The previous prime is 25685069. The next prime is 25685117. The reversal of 25685081 is 18058652.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25685081 - 2¹⁴ = 25668697 is a prime.

It is a super-2 number, since 2×25685081² = 1319446771953122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25685021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6131 + ... + 9431.

It is an arithmetic number, because the mean of its divisors is an integer number (3328416).

Almost surely, 2^25685081 is an apocalyptic number.

It is an amenable number.

25685081 is a deficient number, since it is larger than the sum of its proper divisors (942247).

25685081 is a wasteful number, since it uses less digits than its factorization.

25685081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 25685081 is about 5068.0450866187. The cubic root of 25685081 is about 295.0486599804.

The spelling of 25685081 in words is "twenty-five million, six hundred eighty-five thousand, eighty-one".